When I create a new event via the backend I am unable to see the the event in the event list to make any changes to it.
The event does show in the filter drop down but no matter what I try I cannot get it to show in list so I can make changes to it.
Solution:
Opened up Joomla sql database
located table (joomla database name)_dtregister_group_event
located problem entries and deleted them manually.
Ok, got new events to show in the list after I reinstalled the extension. However old events still show in the upcoming events module but they are not showing in the Events Managment backend so I can change or remove them.